Resilient vehicle-tire.



PATENTED MAR. 6. 1906.

J. F. BAU. l y RESILIBNT VEHICLE. Tmp

APPLICATION FILED SEPT. 19, 1904.

2 SHEETS-SHEET 1.

RCI/lb.

IME; L/n 1 No. EI4,164.

PATENIED MAR. 6, 1906.

J. E. EAU. RESILIENT VEHICLE TIRE.

APPLIOATION FILED SEPT. 19, 1904.

2 sums- SHEET -a.

UNITED YsfilATEs PATENT oEEIoE.

JOHN F. RAU, OF CHICAGO, ILLINOIS, ASSIGNOR OF ON-HALF 'TO' JOHN F. CORDES, OF CHICAGO, ILLINOIS. i

RESILIENT VEHICLE-TIRE.

Specification of Letters Patent.

Patented March 6, 1906.

I Application filed September 19,1904. Serial No. 224,993.

j same, reference being had tothe accompanying drawings, and to the letters of reference marked thereon, which 'form a part of this speciiication. v

'Ihis invention relates to improvements in resllient vehicle-tires, and more articularly to a vehicle-tire of rubber or equivalent material.

Heretoforerubber vehicle-tires have been constructed in three general ty es: first, a solid or cushion tire; second, t e'r so-called single-tube. or hose ipe tires, and, third, the double-tube tire to which the clencher-tires belong. These tires have been used for various purposes with greater or less success, dependent upon the service required and the road upon which the same are to bel used. Each-has certain objectionable features or disadvantages and all possess some advantageous ualitres. 'For example, while the solid or cus ion tire is a noiseless tire for carriages or commercial vehicles of certain kinds the same are not capabl of adapting themselves to even the slight 'f equalities of the roadway sufiicientlyto carry the load Without vibration. The single-tube or hosepipe tire, while to a greater or less extent free rom the objection above noted, are subject to the grave objection that theyjare easily punctured, and in that case are usually not so easily repaired, and,urthermore, must be made of a good quality 'of rubber, thus becomin expensive; On the other hand, the

third c ass-viz., the double tire-while possessing great resiliency and molding to the surface of the road very readily, thereby producin but very slight vibration, have usuall .been iflicult to`secue upon the rim with su cient rigidit and A are also readily punctured in whic case the tire must be removed and he injury repaired or the vehicle endanere ,Y

g The object of this inventionis to provide a rubber tire for vehicle-wheels possessed with all theadvantages of each of the three classes Fig. 8 is an enlarge one of the tubes.

tube.

of'tires before named and one that is practically punctureroof.

grade of rubber to be employed with equally p as satisfactory results. i

The invention consists inthe matters hereinafterdescribed, and more Jfully pointed out and deiined in the Inthe drawings, verticalsection of a tire embodying vmy invention, showing parts of the same in eleva'- tion. Fig. 2 is an enlarged transverse section of the same., Fi 3 1s a reduced section similar to Fig. 2but s owing a slightly-modified construction of the core.` Fig. 4 is a view similar to-Fig. 1 and illustrates the position of the air-valves. Fig. 5 is a transverse section of the same, showing theI airvalves in elevation. Fig. 6 is an enlarged transverse section of one of the tubes in said core. Fig. 7 is a reduced transverse` 'section of the tire, showin the core in elevation. vertical section of the tire, showing a part of the corein side elevation and illustrating a spiral arrangement of 9 is a section taken on ig. 10 is a similar fragappended claims.

line 9 9 of Fig. 8.

mentary section, showing a plurality of the 9o` smaller tubes wound spirally abjoutthe central tube. Fig. 11 is a reduced section taken online 11 11 ofFi .10. As shown in sai drawings, said tire com prises an outer tubular casing having vulcanized 0r otherwise rigidly secured therein `a core comprising a relatively large centraltube having'- arranged around the same other tubes of less diameter,which approximately iill the space between the outer casing and the inner Said outervcasing, as shown, comprises an inner layer A of a good quality of rubber or other suitable material, about which is wrapped a plurality of layers of strong v canvas or fabric, (indicated by a,) which lof course may be of any desired thickness. v An lgure 1 is a fragmentary outer layer of high-Grade rubber (indicated l by a!) invests said fa ric and is made thicker at the periphery to afford a thickened tread portion, as is usual. Means are provided for attaching the tire toa riml comprising struts a2, vulcanized into said casing between the layers of canvas, as shown in Figs. 1 and 2, each of which is provided with an outwardly-extended internally-threaded nipple a3, adapted tobe engaged by the adjusting-bolts, whereby the tire is held in place on the rim. Within and filling said casing and vulcanized thereto is a core comprising an inner or central tube B, havin an inner layer of rubber b, an investing fa ric of canvas b wound a plurality of times about the same, and an outer layer of rubber b2, as shown in Fig. 2. Arran ed around said inner tube is one or more sma ler tubes C, constructed as before described with reference to tube B and which are conveniently of a diameter equal to the distance bei Ween the outer side of the tube B and the inner layer A of the casing. Said tubes B and C are secured in said casing with a uantity of rubber D,` which in vulcanizin fi ls all the spaces between said tubes and vu canizes the same together and to the outer casing.. If preferred, a portion of said rubber D may be omitted between adjacent tubes C and the inner layer A of the casing at the tread of the tire, thus affording eripheral channels d within the tire above tlle tread portion, which -are useful, inasmuch as the increase the resilie'ncy of the tire, especia ly when used on the lighter vehicles.

If preferred, the inner tube B may be made inflatable, thus rendering the tire capable of being inflated to withstand any desired pressure and permitting the resiliency of the tire to be varied at the will of the operator. .The tire for this purpose is constructed as before described, and the central tube B may of course be made of any desiredsize. An airvalve is inserted into the tire to open into saidcentral tube, affording means for inflatin@r the same.

In the construction in Fig. 9 the outer casing is constructed as beforedescribed, as is alsa-the tube B corresponding with the tube B.- '.-Extending around saidtube in a spiral form is a tube C2, similar to the tube C, be-

fore described, except, as shown, it is wound in a relatively close spiral about said tube B 'A and is vulcanized thereto b the filling-rubber D, before described. T is affords a spiral passage through the core and a central I` passage extending through the axis of the spiral..

In the construction illustrated in Figs. 10 and 11 the outer casing is constructed as before described, and about the inner tube is spirally wound a plurality of tubes C3, which approximately l the space between the inner tube B2 and the casing before described.

and vulcanized therein7 thus reducing the same to a unitary structure. The wrappings of canvas or other fabric surrounding the middle tube or the tubes between the same and the casing may be of lany desired thickness and may vary in thickness in different tires to vary the resiliency or the resistance of the tire to compression. For the same reason said tubes may be made in different sizes, if preferred, the tire being of considerable thickness and the resiliency being imparted largely by the construction of said core. The tire may be used either with or without inflating. For heavier service, however, the inner tube may be inflated, thus forming a hose-pipe tire, in which the thickness of the treads is so great as to preclude possibility -of punctures by ordinary causes and in which the arrangement of the smaller tubes around the same is such as to deflect any-pointed instrument from reaching the inner tube to puncture the same.

By the construction described it is obvious that any desired degree of resiliency can be obtained b a tire embodyin my invention, and it is a so evident that t e tire may be lconstructed either by employing a plurality ofv non-communicating small tubes arranved to inclose said large tube B or B or a smaller tube made in one piece may be coiled about the inner tube, ashown in Figs. 7 to 11, inclusive. Obviously the size of said tubes may Vary with respectto each other, if preferred, the inner tube may be made smaller than the intermediate tube, and any method of attaching the tire to a rim may be employed, as may also the exterior conformation-of the tire. l y

Obviously I have not ldescribed all the possible constructions embodyingmy invention, and I therefore do not purpose to limit myself in this application otherwise than necessitated by the prior art and as lstated in the claims, as'A obviously many details of lconstruction may bevaried without departing from the principle of my invention.

I claim as my inventionl. A vehicle-tire comprising'an outer casing, a core integrally united therein comprisingacentral tu e and a plurality of tubes extending around the same, each of said tubes being composed of a plui al-ity of flexible layers. v

2. In a rubber tire for vehicle-wheels, a core vulcanized therein and filling the same, and com rising an inner and an outer central tube, a p uralit y of' layers of canvas intermediate s'aid tubes and a plurality of tubes about said outer tube.

3. A tire comprising an outer and an inner tubular casing, layers of fabric therebetween, a core Within the casing comprising Ioo i IIO a pluralityT oi tubes running longitudinally of the tire each havin a central la er of fabric,

1 Y Y c said tubes being vu anized together.

4. A tire comprisin a core having a plurality of tubes exten ing therethro'u h 1ongitudinally, one ofthe same lying at t eeen-- ter,u the others thereof arrangedaround the center an outer wall on each of said tubes, a

plurality of layers of fabric intermediate the,

outer walls and tubes and a casing inclosing said core and to which the same is vulcanized.

` 5. In a resilient tire, a core comprisin a mass of rubber or other suitable material, a central longitudinal tube extendinor there# through, a plurality of layers of fabric in the walls of said tube, a tube coiled around said central tube and a tubular4 casing inclosing the core thus formed and vulcanized thereto, said casing comprising an outer and aninner lfa'er of rubber and an intermediate layer of a ric Y 6. In a vehicle-tire the combination with a -tubular casing, comprising an inner and an outer layer of rubber and a layer of fabric intermediate the same of a core tted inlandV vulcanized to the casing'and comprising material such as rubber, aninner tube extending longitudinally of and at theaxisof said material and comprising an outer and inner layer rubber and an intermediate layer of canvas, said core thus formed having passages between the same and the casing and extending longitudinally thereof andan air` valve opening from its centraltube through the outer casing;

7 A vehicle-tire, having a central corevuli i canized therein and comprising in combination a'mass of low-grade rubber having a plu rality of channels 1n one side thereof, a .plu-

scribing Witnesses.

i Witnesses: C. W. HILLS,

rality of independent tubes extending longi tudinally of said mass and vulcanized therein and an air-valve opening into the center of.

the core thus formed.

8. In a vehicle-tire a core comprising a central tube a plurality of layers of canvas reinforcin the same an inner and an outer tube coile to inclose the central tube, a plurality of layers of canvas between the same, and rubber filling the spaces betweenr said coiled and central tubes and acting after vulcanization to bind the same together.

9. A vehicle-tire comprising an outer` casing, a central .reinforced tube thereln, a smaller tube coiled to inclose said central tube, a mass of rubber molded on said tubes and vulcanized to the casing and provided with a plurality of channels 1n its outer periphery.

10. yA vehicle-tire comprising an outer casing having a plurality of la ers of canvas 1nclosed by rubber, a .central reinforced tube, smaller tubes arran ed about the same and a mass of rubber moled about said tubes and supporting the same centrally of the casing.

11. A vehicle-tire having an outer oaslng andinterior tubes one arranged at the center ofvtlfie tire, the others inclosed between the same and said casing, a plurality of la ers -of reinforcing fabric ind` the Walls of eac tube. and a mass of rubber vulcanized to and about said interiorI tubes.

In testimony whereof I have hereunto subscribed my narne in the presence of two sub- JoHN F. RAU.

W. W. -WITHENBURY. 

